Flexible tube

ABSTRACT

The present invention provides an environment-friendly structure of a flexible tube, comprising a flexible tube, an inner bulk and a cover. After the flexible tube is fulfilled of a material, an inner bulk is disposed to the tail end and then the flexible tube is packaged. Therefore, when using the flexible tube, the flexible tube can provide a better pressing function, and the material in the flexible tube can be squeezed out completely without wasting any material for environmental protection.

FIELD OF THE INVENTION

The present invention relates to an environment-friendly structure of aflexible tube, especially to a flexible tube structure can beenvironmentally friendly, convenient, and waste free to be used, andsuitable to various types of flexible tubes.

BACKGROUND OF THE INVENTION

Flexible tubes are used to contain skin care products, medicine, andcleaning products in the modern society. Considering the easiness andconvenience of use and carrying, flexible tubes are usually the favoritecontainers. Usually, when manufacturing a flexible tube, a flexibletube, comprising an opening, a tail end and an inner hollow part, and acover are made separately in die sinking at beginning. The tail end ofthe flexible tube is open. The material is fulfilled from the tail endand then the tail end is sealed by sealing equipment.

A flexible tube is made of a flexible material for being easy to besqueezed and folded. If the flexible tube is squeezed, the content canbe squeezed out of the opening. But the material fulfilled in theflexible tube is thick paste. It is not only easy to be squeezed out butalso easy to be adhesive to the inner wall of the flexible tube.Therefore, the content cannot be completely squeezed out. There isalways a small part of the content left in the flexible tube. The userthrows the flexible tube with a small part of the content away, or cutsthe flexible open to scrape the content out of the flexible tube. Butregarding to some medicine, skin care products, or cleaning products, ifthe content is not used or not contained in a clean container right awayafter the flexible tube is cut open, the content could be contaminatedin the air and impair the quality of the content. It is notenvironmentally friendly, and may damage the user's life because thecontent is contaminated by the air.

SUMMARY OF THE INVENTION

The present invention relates to an environment-friendly structure of aflexible tube, comprising a flexible tube, an inner bulk and a cover.After the flexible tube is fulfilled of a material, an inner bulk isdisposed to the tail end and then the flexible tube is packaged. It canensure the content is not adhesive to the inner wall of the flexibletube in the process of squeezing the content, and is helpful to squeezethe content out of the flexible tube to reach the goal of environmentprotection, cost saving and easy-to-use.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is the solid combination and explosion diagram of the presentinvention of an environment-friendly structure of a flexible tube.

FIG. 2 is the lateral view of the combination diagram of the presentinvention of an environment-friendly structure of a flexible tube.

FIG. 3 is the lateral view of the operation diagram of the presentinvention of an environment-friendly structure of a flexible tube.

FIG. 4 is the lateral view of the operation diagram of the presentinvention of an environment-friendly structure of a flexible tube.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

The present invention relates to an environment-friendly structure of aflexible tube, referring to FIGS. 1-4. The structure comprises aflexible tube 1, comprising an inner hollow part 11 for containing amaterial, a tail end 12 at one end for fulfilling the material, a topend 13 at another end, an opening part 14 extended from the top end 13for squeezing the material out. The opening part can be encompassed bythe engaging part 31 of a cover 3.

The structure comprises an inner bulk 2, disposed in the inner hollowpart 11 of the flexible tube 1. The bulk 2 comprises a inclined plane 21at one end and a protrusion end 22 extends from the inclined planen 21.The shape of the protrusion end 22 is the same as the shape of theopening part 14 of the flexible tube 1. The size of the protrusion end22 is less than the size of the opening part 14. In other words, theouter radius of the protrusion end 22 of the inner bulk 2 is smaller orequal to the inner radius of the opening 14 of the flexible tube 1; theinclined plane 21 of the inner bulk 2 and the top end 13 of the flexibletube 1 are in the same shape; the outer circumference of the inclinedplane 21 of the inner bulk 2 is equal to an inner circumference of theinner hollow part 11 of the flexible tube 1. In other words, when theinner bulk 2 is pushed to the top end 13 of the flexible tube 1, theinclined plane 21 of the inner bulk 2 can closely touch the inner sideof the top end 13 of the flexible tube 1. The protrusion end 22 of theinner bulk can be encompassed by the opening part 14 of the flexibletube 1. The inner circumference of the inclined plane 21 of the innerbulk 2 can closely lean against the inner wall of the inner hollow part11 of the flexible tube 1 to scrape. The inner bulk cam be made inone-piece form or not in one-piece form, and made of rigid material ornot rigid material.

The structure comprises a cover 3, in a recess shape. There is anengaging part 31 inside. The engaging part 31 can encompass the openingpart 14 of the flexible tube 1 to seal the opening part 14 of theflexible tube 1.

Conventionally, a flexible tube 1 comprises an opening 14, a tail end 12and an inner hollow 11 part, and top end 13 is made in one-piece form indie sinking at beginning. The tail end 12 of the flexible tube 1 isopen. The material is fulfilled from the tail end 12. Regarding to thepresent invention, the content is fulfilled from the tail end 12 up toan appropriate quantity, and then an inner bulk 2 is disposed to thetail end 12. The protrusion end 22 of the inner bulk 2 faces the openingpart 14 of the flexible tube 1. After the inner bulk 2 is disposed atthe tail end 12, the tail end 12 of the flexible tube 1 is sealed bythermo-compression bonding or compression bonding. Then, the contentfulfilling of the flexible tube 1 is completed.

After opening the cover 3, a user can squeeze any place of the flexibletube 1 to get the content, or push the inner bulk 2 from the tail end 12toward the opening part 14 to get the content. When the content isalmost completely removed out of the flexible tube 1, the inner bulk 2can be pushed toward the opening part 14 and the outer circumference ofthe inclined plane 21 of the inner bulk 2 lean against the inner wall ofthe inner hollow part 11 of the flexible tube. When the inner bulk 2 ispushed to move toward the opening part 14, the outer circumference ofthe inclined plane 21 of the inner bulk 2 scrapes alone the inner wallof the hollow part 11 of the flexible tube 1. It can push the contentadhesive to the inner wall of the hollow part 11 toward the opening part14. Eventually, the inclined plane 21 of the inner bulk 2 will touch theinner surface of the top end 13 of the flexible tube, and the protrusionend 22 of the inner bulk 2 will engage with the inner part of theopening part 14 of the flexible tube 1. In other words, all of thecontent will be squeezed out completely. The user need not to cut theflexible tube 1 open and can squeeze the content out of the flexibletube 1 completely. It is convenient, safe, thrifty, and environmentallyprotective.

What is claimed is:
 1. an environment-friendly structure of a flexibletube, comprising: a flexible tube, comprising an inner hollow part, atail end for fulfilling a material, and a top end to comprise an openingpart; an inner bulk disposed in the inner hollow part, wherein the innerbulk comprises an inclined plane and a protrusion end extends from theinclined plane; a cover in a recess shape, comprising an engaging partinside, wherein the engaging part encompasses the opening part.
 2. Thestructure as claimed in claim 1, wherein the protrusion end of the innerbulk and the opening of the flexible tube are in a same shape
 3. Thestructure as claimed in claim 1, wherein an outer radius of theprotrusion end of the inner bulk is smaller or equal to an inner radiusof the opening of the flexible tube.
 4. The structure as claimed inclaim 1, wherein the inclined plane of the inner bulk and the top end ofthe flexible tube are in a same shape.
 5. The structure as claimed inclaim 1, wherein an outer circumference of the inclined plane of theinner bulk is equal to an inner circumference of the inner hollow partof the flexible tube.
 6. The structure as claimed in claim 1, whereinthe inner bulk is one-piece formed.
 7. The structure as claimed in claim1, wherein the inner bulk is not one-piece formed.
 8. The structure asclaimed in claim 1, wherein the inner bulk is made of a rigid material.9. The structure as claimed in claim 1, wherein the inner bulk is notmade of a rigid material.